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tELI S. BITNER AND J. vB. HOPKINS, OF LOOK HAVEN, PENNSYLVANIA.

Letters atent No. 61,798, dated February 5, 1867.

IMPROVEMENT IN HINGES.

TO ALL WHOM IT MAY CONCERN:

Be it known that we, ELI S. BITNEI and J. B. HOPKINS, of the borough of Lock Haven, in the county of Clinton, and State of Pennsylvania, have invented a new and improved Hinge for Gates and Doors, which are designed to open both ways, and, by aslight modification, to doors and gates which are intended to open but one way, the hinge being desigled to make the door or gate 'to which it is attached self-closing; andwe do hereby declare that the following is a full and exact description thereof, reference being made to the accompanying drawings, and to the letters of reference marked thereon. g

`The nature of our invention consists-in providing .the staple of the hinge with a block or piece of metal rounded down to a sharpedge, and 'the eye of the hinge with two inclined planes meeting-each other 'at the bottom and diverging towards the top.- Upon these planes the edge-block moves up as the gate opens, and down as it closes; and rit also consists in providing the bottom of'the'staple with a projection, and the side of the eye with a groove, so that the gate or doorcannot be unhingedlexcept in one position.

To enable others skilled inthe art to make and use our invention, we will .proceed to describe its construction and operation'.

The plate, edge-block, and staple, are cast in one piece, the plate A being provided with four screw holes and fastened to 'the gate, the staple C pointing downwards, the edg'e B occupying the position represented i'n the draught. The plate E, the brace K, and the eye F, with its planes, are cast in one piece. The eye is prof vided with a groove, H, through which-the projection D in the staple can be passed .when the gate is lifted from I the hinges. The planes G and G areV slightly curved, so that the edge B lies evenly upon the plane in every position.. The gate or door is made to close by its own weight, and will always stop when closed. The same principle can'be applied to` adoor hinge by removing the plates'A and E and extending the edged piece B and t the brace lK into plates with holes for screws, by nfeans of which the staples can be fastened in proper position to the door, andthe eyes to'the door'frames. The same hinge will thus answer for either a right or left hinge,

We claim the combination of vthe edge-block B, and spiral-inclined planes G G, with the projection 1), and groove H, all constructed as'and for the purpose described.

Y ELI S. BITNER, Witnesses: J. B. HOPKINS.

Communs BURLnw, G. W. MARSHALL. 

